Calling a method using null in Java\\n

When a method is invoked on a null reference, it throws NullPointerException but in case of the static method, we can make it possible using cast expression. See the example below −

Example

Live Demo

public class Tester {    public static void display(){       System.out.println("display");    }    private void print() {       System.out.println("print");    }    public static void main(String[] args) {       //Scenario 1:       //Calling a method on null reference       //causes NullPointerException       try {          Tester test = null;           test.print();       }catch(Exception e) {          System.out.println(e.getMessage());       }       //Scenario 2:       //Static method can be invoked       //on a null object by using the casting expression       ((Tester)null).display();    } }

Output

null display

Notes

• Scenario 1 demonstrates the code causing NullPointerException.

• Scenario 2 demonstrates the use of the static method by evaluating a class name on a null object.